Patents by Inventor Yoshimasa Okamura
Yoshimasa Okamura has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 10006564Abstract: A fluid control valve includes a passage block formed with a passage, a valve seat provided in the passage block, and a valve element to be brought into contact with or separated from the valve seat. The fluid control valve is configured to open and close the passage by movement of the valve element with respect to the valve seat to control a fluid. The fluid control valve further includes a shape-changeable part which changes its shape in association with the movement of the valve element. The shape-changeable part has a surface formed with a monomolecular film of fluorosilane material.Type: GrantFiled: August 10, 2016Date of Patent: June 26, 2018Assignee: CKD CORPORATIONInventors: Yoshimasa Okamura, Yoji Mori
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Publication number: 20180045332Abstract: A fluid control valve includes a passage block formed with a passage, a valve seat provided in the passage block, and a valve element to be brought into contact with or separated from the valve seat. The fluid control valve is configured to open and close the passage by movement of the valve element with respect to the valve seat to control a fluid. The fluid control valve further includes a shape-changeable part which changes its shape in association with the movement of the valve element. The shape-changeable part has a surface formed with a monomolecular film of fluorosilane material.Type: ApplicationFiled: August 10, 2016Publication date: February 15, 2018Applicant: CKD CORPORATIONInventors: Yoshimasa OKAMURA, Yoji MORI
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Patent number: 9266288Abstract: A three-dimensional printing apparatus includes a shaping head to discharge a resin material, a table to retain the discharged resin material, a carriage mechanism fitted to the shaping head and moving the shaping head relative to the table, a rotatable member disposed outward of the table, a first horizontal rotary shaft rotatably supporting the table, a first motor to rotate the first horizontal rotary shaft, a second horizontal rotary shaft fitted to the rotatable member and extending in a direction perpendicular or substantially perpendicular to the first horizontal rotary shaft, a second motor to rotate the second horizontal rotary shaft so as to rotate the table, the first horizontal rotary shaft, and the first motor, along with the rotatable member, around the second horizontal rotary shaft, and a microcomputer configured or programmed to control the shaping head, the first motor, and the second motor.Type: GrantFiled: October 10, 2014Date of Patent: February 23, 2016Assignee: ROLAND DG CORPORATIONInventor: Yoshimasa Okamura
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Patent number: 9056472Abstract: A fluid ejector includes a substrate having an exterior surface and an interior surface. A non-wetting coating can cover at least a portion of the exterior surface and can be substantially absent from the flow path. A non-wetting coating can be formed of a molecular aggregation. A precursor of a non-wetting coating may flow into a chamber at a higher temperature higher than the substrate. A non-wetting coating can be over a seed layer. An outer portion of the seed layer can have a higher concentration of water molecules or a greater density than an inner portion. The outer portion can be deposited at a ratio of partial pressure water to partial pressure matrix precursor that is higher than the ratio for the inner portion. An oxygen plasma can be applied to a seed layer on the exterior surface, and the non-wetting coating can be applied on the seed layer.Type: GrantFiled: April 17, 2014Date of Patent: June 16, 2015Assignee: FUJIFILM CorporationInventor: Yoshimasa Okamura
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Publication number: 20150110912Abstract: A three-dimensional printing apparatus includes a shaping head to discharge a resin material, a table to retain the discharged resin material, a carriage mechanism fitted to the shaping head and moving the shaping head relative to the table, a rotatable member disposed outward of the table, a first horizontal rotary shaft rotatably supporting the table, a first motor to rotate the first horizontal rotary shaft, a second horizontal rotary shaft fitted to the rotatable member and extending in a direction perpendicular or substantially perpendicular to the first horizontal rotary shaft, a second motor to rotate the second horizontal rotary shaft so as to rotate the table, the first horizontal rotary shaft, and the first motor, along with the rotatable member, around the second horizontal rotary shaft, and a microcomputer configured or programmed to control the shaping head, the first motor, and the second motor.Type: ApplicationFiled: October 10, 2014Publication date: April 23, 2015Inventor: Yoshimasa OKAMURA
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Publication number: 20140225960Abstract: A fluid ejector includes a substrate having an exterior surface and an interior surface. A non-wetting coating can cover at least a portion of the exterior surface and can be substantially absent from the flow path. A non-wetting coating can be formed of a molecular aggregation. A precursor of a non-wetting coating may flow into a chamber at a higher temperature higher than the substrate. A non-wetting coating can be over a seed layer. An outer portion of the seed layer can have a higher concentration of water molecules or a greater density than an inner portion. The outer portion can be deposited at a ratio of partial pressure water to partial pressure matrix precursor that is higher than the ratio for the inner portion. An oxygen plasma can be applied to a seed layer on the exterior surface, and the non-wetting coating can be applied on the seed layer.Type: ApplicationFiled: April 17, 2014Publication date: August 14, 2014Applicant: FUJIFILM CorporationInventor: Yoshimasa Okamura
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Patent number: 8733897Abstract: A fluid ejector includes a substrate having an exterior surface and an interior surface. A non-wetting coating can cover at least a portion of the exterior surface and can be substantially absent from the flow path. A non-wetting coating can be formed of a molecular aggregation. A precursor of a non-wetting coating may flow into a chamber at a higher temperature higher than the substrate. A non-wetting coating can be over a seed layer. An outer portion of the seed layer can have a higher concentration of water molecules or a greater density than an inner portion. The outer portion can be deposited at a ratio of partial pressure water to partial pressure matrix precursor that is higher than the ratio for the inner portion. An oxygen plasma can be applied to a seed layer on the exterior surface, and the non-wetting coating can be applied on the seed layer.Type: GrantFiled: October 27, 2009Date of Patent: May 27, 2014Assignee: FUJIFILM CorporationInventor: Yoshimasa Okamura
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Patent number: 8523322Abstract: A fluid ejector having an inner surface, an outer surface, and an orifice that allows fluid in contact with the inner surface to be ejected. The fluid ejector has a non-wetting monolayer covering at least a portion of the outer surface of the fluid ejector and surrounding an orifice in the fluid ejector. Fabrication of the non-wetting monolayer can include removing a non-wetting monolayer from a second region of a fluid ejector while leaving the non-wetting monolayer on a first region surrounding an orifice in the fluid ejector, or protecting a second region of a fluid ejector from having a non-wetting monolayer formed thereon, wherein the second region does not include a first region surrounding the orifice in the fluid ejector.Type: GrantFiled: June 30, 2006Date of Patent: September 3, 2013Assignee: FUJIFILM Dimatix, Inc.Inventors: Yoshimasa Okamura, Jeffrey Birkmeyer, John A. Higginson, Gregory Debrabander, Paul A. Hoisington, Andreas Bibl
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Patent number: 8262200Abstract: A method of forming a non-wetting coating on a fluid ejector includes applying an oxygen plasma to a substrate to form an outer portion of the substrate having a density that is greater than a density of an interior portion of the substrate and depositing a non-wetting coating on an exterior surface of the outer portion. The outer portion is less than 80 ? thick.Type: GrantFiled: September 15, 2009Date of Patent: September 11, 2012Assignee: FUJIFILM CorporationInventor: Yoshimasa Okamura
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Patent number: 8226208Abstract: A fluid ejector having an inner surface, an outer surface, and an orifice that allows fluid in contact with the inner surface to be ejected. The fluid ejector has a non-wetting monolayer covering at least a portion of the outer surface of the fluid ejector and surrounding an orifice in the fluid ejector. Fabrication of the non-wetting monolayer can include removing a non-wetting monolayer from a second region of a fluid ejector while leaving the non-wetting monolayer on a first region surrounding an orifice in the fluid ejector, or protecting a second region of a fluid ejector from having a non-wetting monolayer formed thereon, wherein the second region does not include a first region surrounding the orifice in the fluid ejector.Type: GrantFiled: May 12, 2011Date of Patent: July 24, 2012Assignee: FUJIFILM Dimatix, Inc.Inventors: Yoshimasa Okamura, Jeffrey Birkmeyer, John A. Higginson, Gregory De Brabander, Paul A. Hoisington, Andreas Bibl
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Patent number: 8128201Abstract: A fluid ejector having a first surface, a second surface, and an orifice that allows fluid in contact with the second surface to be ejected. The fluid ejector has a non-wetting layer exposed on at least a first surface of the fluid ejector, and a overcoat layer exposed on a second surface, the overcoat layer being more wetting than the non-wetting layer. Fabrication of this apparatus can include depositing a non-wetting layer on the first and second surfaces, masking the first surface, optionally removing the non-wetting layer from the second surface, and depositing an overcoat layer on the second surface.Type: GrantFiled: November 30, 2007Date of Patent: March 6, 2012Assignee: FUJIFILM Dimatix, Inc.Inventors: Yoshimasa Okamura, Jeffrey Birkmeyer, John A. Higginson
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Publication number: 20110261112Abstract: A fluid ejector includes a substrate having an exterior surface and an interior surface. A non-wetting coating can cover at least a portion of the exterior surface and can be substantially absent from the flow path. A non-wetting coating can be formed of a molecular aggregation. A precursor of a non-wetting coating may flow into a chamber at a higher temperature higher than the substrate. A non-wetting coating can be over a seed layer. An outer portion of the seed layer can have a higher concentration of water molecules or a greater density than an inner portion. The outer portion can be deposited at a ratio of partial pressure water to partial pressure matrix precursor that is higher than the ratio for the inner portion. An oxygen plasma can be applied to a seed layer on the exterior surface, and the non-wetting coating can be applied on the seed layer.Type: ApplicationFiled: October 27, 2009Publication date: October 27, 2011Applicant: FUJIFILM CORPORATIONInventor: Yoshimasa Okamura
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Patent number: 8038260Abstract: A fluid ejector is provided, having an internal surface, an external surface, an orifice that allows fluid in contact with the internal surface to be ejected, a first non-wetting region of the external surface, and one or more second regions of the external surface that are more wetting than the first non-wetting region. A process for cleaning the fluid ejectors is provided that includes detachably securing a faceplate to the fluid ejector and moving a wiper laterally across the faceplate.Type: GrantFiled: December 18, 2007Date of Patent: October 18, 2011Assignee: FUJIFILM Dimatix, Inc.Inventor: Yoshimasa Okamura
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Publication number: 20110212261Abstract: A fluid ejector having an inner surface, an outer surface, and an orifice that allows fluid in contact with the inner surface to be ejected. The fluid ejector has a non-wetting monolayer covering at least a portion of the outer surface of the fluid ejector and surrounding an orifice in the fluid ejector. Fabrication of the non-wetting monolayer can include removing a non-wetting monolayer from a second region of a fluid ejector while leaving the non-wetting monolayer on a first region surrounding an orifice in the fluid ejector, or protecting a second region of a fluid ejector from having a non-wetting monolayer formed thereon, wherein the second region does not include a first region surrounding the orifice in the fluid ejector.Type: ApplicationFiled: May 12, 2011Publication date: September 1, 2011Inventors: Yoshimasa Okamura, Jeffrey Birkmeyer, John A. Higginson, Gregory Debrabander, Paul A. Hoisington, Andreas Bibl
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Publication number: 20110063369Abstract: A method of forming a non-wetting coating on a fluid ejector includes applying an oxygen plasma to a substrate to form an outer portion of the substrate having a density that is greater than a density of an interior portion of the substrate and depositing a non-wetting coating on an exterior surface of the outer portion. The outer portion is less than 80 ? thick.Type: ApplicationFiled: September 15, 2009Publication date: March 17, 2011Inventor: Yoshimasa Okamura
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Publication number: 20080150998Abstract: A fluid ejector is provided, having an internal surface, an external surface, an orifice that allows fluid in contact with the internal surface to be ejected, a first non-wetting region of the external surface, and one or more second regions of the external surface that are more wetting than the first non-wetting region. A process for cleaning the fluid ejectors is provided that includes detachably securing a faceplate to the fluid ejector and moving a wiper laterally across the faceplate.Type: ApplicationFiled: December 18, 2007Publication date: June 26, 2008Inventor: Yoshimasa Okamura
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Publication number: 20080136866Abstract: A fluid ejector having a first surface, a second surface, and an orifice that allows fluid in contact with the second surface to be ejected. The fluid ejector has a non-wetting layer exposed on at least a first surface of the fluid ejector, and a overcoat layer exposed on a second surface, the overcoat layer being more wetting than the non-wetting layer. Fabrication of this apparatus can include depositing a non-wetting layer on the first and second surfaces, masking the first surface, optionally removing the non-wetting layer from the second surface, and depositing an overcoat layer on the second surface.Type: ApplicationFiled: November 30, 2007Publication date: June 12, 2008Inventors: Yoshimasa Okamura, Jeffrey Birkmeyer, John A. Higginson
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Publication number: 20070030306Abstract: A fluid ejector having an inner surface, an outer surface, and an orifice that allows fluid in contact with the inner surface to be ejected. The fluid ejector has a non-wetting monolayer covering at least a portion of the outer surface of the fluid ejector and surrounding an orifice in the fluid ejector. Fabrication of the non-wetting monolayer can include removing a non-wetting monolayer from a second region of a fluid ejector while leaving the non-wetting monolayer on a first region surrounding an orifice in the fluid ejector, or protecting a second region of a fluid ejector from having a non-wetting monolayer formed thereon, wherein the second region does not include a first region surrounding the orifice in the fluid ejector.Type: ApplicationFiled: June 30, 2006Publication date: February 8, 2007Inventors: Yoshimasa Okamura, Jeffrey Birkmeyer, John Higginson, Gregory Debrabander, Paul Hoisington, Andreas Bibl
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Patent number: 6969679Abstract: In a method for fabricating a nanowire thermoelectric device, a first electrode pattern is formed on a substrate, wherein the first electrode pattern includes bottom electrodes and a first set of connections which connects the bottom electrodes to form first and second groups of electrically connected bottom electrodes. P-type nanowires and n-type nanowires are selectively formed on the substrate by selectively activating either the first group of electrically connected bottom electrodes and the second group. The p-type and n-type nanowires are then connected by top electrodes. A first set of holes in the substrate is formed to remove the first set of connections. A second set of holes to allow for electrical access to the bottom electrodes, and a second set of connections are formed, so as to result in an array of thermocouples connected to each other in parallel banks of series-connected thermocouples.Type: GrantFiled: November 25, 2003Date of Patent: November 29, 2005Assignee: Canon Kabushiki KaishaInventors: Yoshimasa Okamura, Timothy L. Kohler
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Patent number: 6962758Abstract: An organic light-emitting device (OLED) in which an iptycene derivative is used as the emissive layer and/or one or more of the charge transport layers, or as a host material for one or more of these layers.Type: GrantFiled: July 6, 2004Date of Patent: November 8, 2005Assignee: Canon Kabushiki KaishaInventors: Jian Ping Chen, Yoshimasa Okamura